Author: Uri Blass
Date: 06:53:14 09/28/00
Go up one level in this thread
On September 28, 2000 at 09:44:41, Uri Blass wrote: >On September 28, 2000 at 07:15:45, Vincent Lejeune wrote: > >>I would suggest a new type of "swindle mode" : the method is based on 1) make >>the right move difficult to find for a human and 2) play quickly to put pressure >>on human >> >>Here's the Idea : if an endgame is a tablebase draw, select all the drawing >>moves and explore them only in tablebase to measure where the human will have >>the hardest work to do : calculate, for all this drawing moves, with iterative >>deepening, the worst ratio (number of drawing moves for human divide by number >>of possible moves for human) for the human in the tree, because a narrower path >>is difficult to follow (see the game Deep Thought-Alex Fishbein post some days >>ago: where human had only one drawing move he didn't find it). The depth still >>to be dertimined may be 5 plies, may be 10 or simply play right after the >>human's move to put maximum pressure. >> >>This method exploit the main point of tablebase eg : the precision allied with >>the speed; where the human brain get kill by machine. >> >>I hope that Bob will test this algorithm for Crafty , I'm confident in it :) >> >>If I was not enough clear please tell me... >> >>Best regards >>Vincent Lejeune > >I do not understand > >Here is a possible position KRB vs KR. >[D]8/7R/2k2K2/5B2/8/8/8/2r5 w - - 0 1 > >After Rc7+ black has exactly one drawing move out of 5. > >Do you suggest Crafty to play Rc7+ because the ratio is probably the best with >this move or do you suggest to search deeper in order to calculate the best >ratio that you can force in 5 plies assuming the opponent play good moves? > >Uri I think that a better idea is not to divide the number of drawing moves by the number of possible moves but to divide the number of drawing by the sum of the weights of the number of possible moves when the weight of a losing position is bigger if the mate is longer(short mates in less than 20 moves should have a very small weight). Uri
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.